Thrust ball bearing is a kind of separated bearing. Shaft ring and seat ring can be separated from components of cage and steel ball. The shaft ring is a ring matched with the shaft, the seat ring is a ring matched with the bearing seat hole, and there is a gap between the shaft and the ring. Thrust ball bearings can not receive radial load and limit speed is low.
推力球轴承用途（Thrust ball bearings）
推力球轴承只适用于承受一面轴向负荷、转速较低的机件上，只适用于承受一面轴向负荷、转速较低的机件上，例如起重机吊钩、立时水泵、立时离心机、千斤顶、低速减速器等。
Thrust ball bearings are only suitable for the parts bearing one side of axial load and low speed. They are only suitable for the parts bearing one side of axial load and low speed, such as crane hook, instant water pump, instant centrifuge, jack, low speed reducer, etc.
根据其结构形式可以分为单向推力球和双向推力球轴承。
According to its structural form, it can be divided into unidirectional thrust ball and two-way thrust ball bearing.
单向推力球轴承（single direction thrust ball bearing）
单向推力球轴承的组成由一个轴圈、一个轴承座圈、以及一个球与保持架推力组件所组成。轴承为可分离结构，所以安装简单，因为垫圈和球与保持架组件可以分开安装。
The unidirectional thrust ball bearing consists of a shaft ring, a bearing seat ring, and a thrust component of a ball and cage. Bearings are separable structure, so installation is simple, because washers and ball and cage components can be installed separately.
小型单向推力球轴承有两种，分别为带平面座圈或带调心座圈。带调心座圈的轴承可与调心座垫圈配合使用，以补偿轴承座内的支撑表面与轴之间的角度对中误差。
There are two kinds of small single direction thrust ball bearings, one is a plane seat ring or the other is a center adjusting seat ring. Bearings with self-aligning seat rings can be used in conjunction with self-aligning seat washers to compensate for the angular alignment error between the support surface and the shaft in the bearing seat.
双向推力球轴承（Bidirectional thrust ball bearing）
双向推力球轴承的组成由座双向推力球轴承包括一个轴圈、二个座圈和二个钢球-保持架组件三部分构成。轴承是分离型的，各零件皆可以独立安装。与轴配合的称轴圈，可以承受两个方向的轴向负荷，可双向固定机轴。这类轴承绝不能承受任何交车径向负荷。推力球轴承还有带座垫的结构，由于座垫的安装面呈球面形，故轴承具有调心性能，可以减少安装误差的影响。
The two-way thrust ball bearing is composed of three parts: a shaft ring, two seat rings and two steel ball-cage assemblies. Bearings are separable and all parts can be installed independently. The shaft ring matched with the shaft can bear axial load in two directions, and can fix the axle in two ways. Such bearings must not withstand any radial load. Thrust ball bearings also have a cushioned structure. Because the mounting surface of the cushion is spherical, the thrust ball bearings have alignment performance, which can reduce the impact of installation errors.
双向轴承与单向轴承是使用相同的轴圈、座圈和钢球-保持架组件。
Two way bearings and one way bearings are made of the same shaft ring, seat ring and steel ball cage assembly.
推力轴承的安装注意事项（Precautions for installation of thrust bearings）：
平面推力轴承在装配体中主要承受轴向载荷，其应用广泛。平面推力轴承在装配体中主要承受轴向载荷，其应用广泛。虽然推力轴承安装操作比较简单，虽然推力轴承安装操作比较简单，但实际维修时仍常有错误发生，即轴承的紧环和松环安装位置不正确，发生，即轴承的紧环和松环安装位置不正确，结果使轴承失去作用，轴颈很快地被磨损。紧环内圈与轴颈为过渡配合，去作用，轴颈很快地被磨损。紧环内圈与轴颈为过渡配合当轴转动时带动紧环，并与静止件端面发生摩擦，当轴转动时带动紧环，并与静止件端面发生摩擦，在受到轴向作用力（Fx）时将出现摩擦力矩大于内径配合阻力矩，向作用力（Fx）时，将出现摩擦力矩大于内径配合阻力矩，导（Fx）致紧环与轴配合面|强制转动，加剧轴颈磨损。
The thrust bearing of plane is mainly applied to the axial load of assembly, and it is widely used. The thrust bearing of plane is mainly applied to the axial load of assembly, and it is widely used. Although the installation and operation of thrust bearings are relatively simple, although the installation and operation of thrust bearings are relatively simple, errors often occur in actual maintenance, that is, the installation position of the tightening ring and loosening ring of bearings is incorrect, that is, the installation position of the tightening ring and loosening ring of bearings is incorrect, as a result, the bearings lose their function and the journal is quickly worn out. . The inner ring of the tight ring and the axle neck are used for transition, and the journal is worn quickly. The inner ring of the tightening ring and the journal are in transitional coordination. When the axis rotates, it drives the tightening ring and rubs against the end face of the stationary part. When the axis rotates, it drives the tightening ring and rubs against the end face of the stationary part. When it is subjected to the axial force (Fx), the friction moment will be greater than the internal diameter fit resistance moment. When the axial force (Fx) is applied, the friction force will appear. The moment is greater than the resistance moment of the inner diameter fit, and the Fx compact ring and the axis fit surface rotate forcibly, which aggravates the Journal wear.
所以推力轴承安装时应注意以下几点（Therefore, attention should be paid to the following points when installing thrust bearings.）。
(1)分清轴承的紧环和松环(根据轴承内径大小判断，孔径相分清轴承的紧环和松环O.1——O.5mm)。差O.1——O.5mm)。
(1) Distinguish the tight ring and the loose ring of the bearing (according to the size of the bearing inner diameter, the aperture phase distinguishes the tight ring and the loose ring O.1-O.5mm). Poor O.1 - O.5mm).
(2)分清机构的静止件(即不发生运动的部件，主要是指装配分清机构的静止件体)。
(2) The stationary parts of the separating mechanism (i.e. the parts that do not move, mainly refer to the stationary parts of the assembling and separating mechanism).
(3)无论什么情况，轴承的松环始终应靠在静止件的端面上。
(3) in any case, the loose ring of the bearing should always depend on the end part of the stationary part.
